Hawaii Ocean Map

Hawaii Ocean Map brings professional-grade seafloor mapping to your iPhone and iPad. Explore the depths around the Hawaiian Islands with NOAA's high-resolution bathymetry data—all available offline, with no subscription required. PROFESSIONAL DEPTH DATA Access detailed ocean floor topography derived from NOAA's Continuously Updated Digital Elevation Model (CUDEM) at approximately 3-meter resolution. Find underwater features including reefs, ledges, channels, and drop-offs with precision. WORKS OFFLINE Download maps before you head out. Whether you're miles offshore or in areas with no cell coverage, your depth data is always available. Perfect for ocean adventures beyond the reach of cellular networks. INSTANT DEPTH QUERIES Tap anywhere on the map to instantly see the water depth at that location. Plan routes, identify fishing spots, or explore underwater terrain with a simple touch. SAVE LOCATIONS Mark and save your favorite spots with custom placemarks. Add names, notes, and organize your locations for quick reference on future trips. NAVIGATE TO WAYPOINTS Select any saved placemark and get live bearing, distance, and a compass guiding you to your destination. Keep your eyes on the water while the app points the way. RECORD GPS TRACKS Capture your routes as you explore Hawaii's waters. Start, pause, and resume recording, then export your tracks as standard GPX files to share or analyze. Your tracks sync automatically across all your devices via iCloud. POINTS OF INTEREST Browse and toggle curated locations across the Hawaiian Islands—harbors, boat ramps, fishing stores, FAD buoys, and surf spots. Tap any pin for details including address, phone, and website links. FISHING ZONES View DLNR marine managed areas including Marine Life Conservation Districts, Fisheries Management Areas, Natural Area Reserves, and more. Tap any zone to see official regulations—what's permitted, what's prohibited, and links to full DLNR rules. Toggle zones by region in settings. MEASURE DISTANCES Use the built-in measurement tool to calculate distances between any two points on the map. FULL ISLAND COVERAGE Complete bathymetry coverage for all major Hawaiian Islands—Oahu, Maui, Big Island, Kauai, Molokai, Lanai, and surrounding waters. NO SUBSCRIPTIONS One purchase, lifetime access. No recurring fees, no in-app purchases, no ads. Ideal for boaters, fishermen, divers, snorkelers, kayakers, and anyone who wants to understand what lies beneath Hawaii's beautiful waters.